London's Tory mayor/blogger, Boris Johnson, perhaps the only World City mayor who is as bike mad as our own Adrian Fenty, was very nearly struck by a speeding truck while out exploring potential bike lane routes the other day. In addition to very nearly depriving us of a delightfully wacky British politician, it demonstrates that we aren't safe out there. You watch this vid, and understand how people turn into "that annoying bike advocate guy who hates cars."
So be safe out there. If it can happen to Boris, it can happen to you. You too, Fenty.